What is the definition of 'oceanobacterium'?

An 'oceanobacterium' is like a microscopic ocean explorer with an insatiable appetite for carbon dioxide. Picture this: A tiny, sea-dwelling, CO2-hungry alien, but way more annoying than a pirate on a treasure hunt.

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Edgy example sentence: "The oceanobacterium decided to join our planet's carbon cycle, but it looked more like it had just swapped its space suit for a beach towel and started giving us a seaweed shock."